MODEL KESETIMBANGAN PADA ADSORPSI  ION KADMIUM MENGGUNAKAN HIDROKSIAPATIT DARI KULIT KERANG DARAH

Silvia Reni Yenti; Ahmad Fadli; Drastinawati Drastinawati; Zultiniar Zultiniar; Aidina Fahrun Nisa

doi:10.31258/jst.v17.n1.p9-15

MODEL KESETIMBANGAN PADA ADSORPSI ION KADMIUM MENGGUNAKAN HIDROKSIAPATIT DARI KULIT KERANG DARAH

Jurnal Sains dan Teknologi ◽

10.31258/jst.v17.n1.p9-15 ◽

2019 ◽

Vol 17 (1) ◽

pp. 9

Author(s):

Silvia Reni Yenti ◽

Ahmad Fadli ◽

Drastinawati Drastinawati ◽

Zultiniar Zultiniar ◽

Aidina Fahrun Nisa

Keyword(s):

Atomic Adsorption ◽

Atomic Adsorption Spectroscopy ◽

Model Isotherm

Pencemaran logam berat kadmium (Cd2+) di perairan mengakibatkan kerusakan yang besar bagi kehidupan manusia. Salah satu cara untuk menghilangkan dan mengurangi logam cadmium adalah menggunakan proses adsorpsi. Larutan kadmium (Cd2+) 3mg/L sebanyak 200 mL ditambahkan HAp 0,5 gr dan diaduk dengan kecepatan 100, 200 dan 300 rpm pada suhu 30°C, 40°C dan 50°C. Larutan kemudian dianalisa menggunakan Atomic Adsorption Spectroscopy (AAS) untuk mengetahui konsentrasi kadmium. Semakin besar suhu adsorpsi maka kapasitas penjerapan adsorben HAp (Qe) semakin kecil. Semakin besar kecepatan pengadukan adsorpsi, maka semakin besar pula kapasitas penjerapan adsorben HAp (Qe). Mekanisme adsorpsi logam kadmium (Cd2+) menggunakan HAp memiliki kecocokan dengan model isotherm Freundlich yang mewakili adsorpsi fisika dengan kapasitas panas adsorpsi (ΔH) sebesar -1,665304 kcal/mol.K dan perubahan entropi (ΔS) didapatkan sebesar 15,76 J/mol.K.

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Pyridine-functionalized mesoporous silica as an adsorbent material for the determination of nickel and lead in vegetables grown in close proximity by electrothermal atomic adsorption spectroscopy

Food Chemistry ◽

10.1016/j.foodchem.2010.12.159 ◽

2011 ◽

Vol 127 (1) ◽

pp. 364-368 ◽

Cited By ~ 29

Author(s):

O. Sadeghi ◽

N. Tavassoli ◽

M.M. Amini ◽

H. Ebrahimzadeh ◽

N. Daei

Keyword(s):

Mesoporous Silica ◽

Atomic Adsorption ◽

Functionalized Mesoporous Silica ◽

Determination Of Nickel ◽

Close Proximity ◽

Atomic Adsorption Spectroscopy

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Physicochemical Characteristic of Sago Hampas and Sago Wastewater in Luwu Regency

E3S Web of Conferences ◽

10.1051/e3sconf/20187307007 ◽

2018 ◽

Vol 73 ◽

pp. 07007

Author(s):

Hammado Nururrahmah ◽

Budiyono ◽

Utomo Sudarno

Keyword(s):

Analytical Methods ◽

Organic Materials ◽

Biogas Production ◽

Physicochemical Characteristic ◽

Physicochemical Characteristics ◽

Sago Starch ◽

Atomic Adsorption ◽

Atomic Adsorption Spectroscopy ◽

Sago Waste

A study was carried out to determine the physicochemical characteristics of sago hampas and sago wastewater from sago processing mill in Luwu Regency. The sago hampas was used is the residue of sago starch filtration of unrefined raw fiber. The sago wastewater was taken from processing mill are discharged into river. The points of sago wastewater sampling were undertaken in three different points, namely first wastewater (A1), the last wastewater (A2), and water that has been discharged into the river (A3). The sago hampas and sago wastewater processing mill was obtained by Spectrofotometric, Atomic Adsorption Spectroscopy, and analytical methods. The sago hampas content was found at C-Organic 33.01%; N-total 1.66%; C/N ratio 20; P2O5 0.04%, and minerals which are Calsium 27716 ppm, Magnesium 4247 ppm, and Sulfur 743 ppm. COD concentration sago from wastewater was found at A3 point which is 177.3985 mg/l; N-total 0.1%; Phospor 0.01 ppm; Kalium 10.46 ppm; Magnesium 5.84 ppm; and Calsium 0.62 ppm. The high content of organic materials and minerals in sago hampas and sago wastewater needs to be processed before discharging it into the river. The results of this study indicate that sago waste can be used as a feedstock biogas production.

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A PRELIMINARY STUDY OF THE COLEMANITE-RICH TUFF LAYER FROM THE SOURIDES AREA, KARLOVASSI BASIN, SAMOS ISLAND, HELLAS

Bulletin of the Geological Society of Greece ◽

10.12681/bgsg.16717 ◽

2007 ◽

Vol 40 (2) ◽

pp. 769

Author(s):

N. Kantiranis ◽

A. Filippidis ◽

M. Stamatakis ◽

E. Tzamos ◽

A. Drakoulis

Keyword(s):

Chemical Composition ◽

Light Microscopy ◽

Powder Diffraction ◽

X Ray ◽

Atomic Adsorption ◽

Atomic Adsorption Spectroscopy ◽

Preliminary Study

Representative 3 kg sample of a colemanite-bearing tuffaceous layer from Sourides village of Samos Island have been investigated for its mineralogical and chemical composition using Light Microscopy, X-Ray Powder Diffraction and Atomic Adsorption Spectroscopy methods. The studied sample contains 68 wt. % colemanite, consisting of 31.1 wt. % B203 and 28.4 wt. % CaO. The mineralogical and chemical composition of the sample, after calcination could produce a concentrate containing 43-44 wt. % B203, fulfill at least one of the commercial specifications for the calcined colemanite concentrates.

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Pemanfaatan Cangkang Pensi (Corbicula Moltkiana) sebagai Bahan Penyerap Zat Warna Rhodamin B Dalam Larutan

Talenta Conference Series Science and Technology (ST) ◽

10.32734/st.v2i2.500 ◽

2019 ◽

Vol 2 (2) ◽

Author(s):

Rahmiana Zein ◽

Mutia Khuratul Aini ◽

Hermansyah Aziz

Keyword(s):

Rhodamine B ◽

Sem Analysis ◽

Spectra Analysis ◽

Biosorption Capacity ◽

Biosorption Process ◽

Langmuir Isotherm Model ◽

Ft Ir ◽

Cationic Exchange ◽

Rhodamin B ◽

Model Isotherm

Biosorpsi zat warna Rhodamine B menggunakan cangkang Pensi (Corbicula moltkiana) telah dikaji. Percobaan dilakukan dengan system batch guna memperoleh kondisi optimum biosorspi zat warna. Kapasitas biosorpsi zat warna pada pH 2 adalah 0.9958 mg/g, dengan konsentrasi larutan mula-mula 150 mg/L waktu kontak 105 menit, massa biosorben 0.1 g, ukuran partikel 32 µm dan temperature pengeringan biosorben pada 75oC. Model isotherm Langmuir menunjukkan bahwa proses penyerapan berlangsung secara kimia dan biosorpsi homogeny dari adsorbat (Rhodamine B) pada permukaan biosorben membentuk lapisan tunggal dengan nilai R2 0.9966. Analisis XRF menunjukkan bahwa penurunan kadar unsur logam pada cangkang Pensi membuktikan bahwa proses biosorpsi berlangsung dengan pertukaran kation. Hasil analisis spektrum FT-IR membuktikan adanya interaksi antaramolekul Rhodamin B dengan gugus fungsi pada cangkang Pensi. Analisis dengan SEM memperlihatkan bahwa pori-pori cangkang Pensi telah terisi penuh oleh molekul Rhodamin B. Kondisi optimum biosorpsi telah diaplikasikan pada limbah kerupuk merah dengan kapasitas penyerapan sebesar 0,2835 mg/g. The biosorption of Rhodamine B dyes by Pensi (Corbicula moltkiana) shell has been investigated. The experiment was conducted in batch sistem in order to obtain the optimum conditions of dye biosorption. Biosorption capacity of dye was 0.9958 mg/g at pH 2, initial concentration 150 mg/L, contact time 105 minutes, biosorbent mass 0.1 gram, particle size 32 µ m and biosorbent drying temperature was at 75oC. The Langmuir Isotherm model showed chemisorption and homogeneous biosorption process of adsorbates onto the biosorbent surface formed monolayer dye molecules on the biosorbent surface with R2 value was 0.9966. XRF analysis showed that reduction of metals unsure quantity of pensi shell indicated biosorption process was occupied through cationic exchange. The result of FTIR spectra analysis indicated an interaction between Rhodamin B molecules and functional group of pensi shell. SEM analysis showed that the pensi shell pores were completely filled by Rhodamine B molecules. The optimum condition of biosorption has been aplicated in red chips wastewater industry with biosorption capacity was 0.2835 mg/g.

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Synthesis of Nanobentonite as Heavy Metal Adsorbent with Various Solvents

Oriental Journal Of Chemistry ◽

10.13005/ojc/3404020 ◽

2018 ◽

Vol 34 (4) ◽

pp. 1854-1857

Author(s):

Makmur Sirait ◽

Saharman Gea ◽

Nurdin Bukit ◽

Nurdin Siregar ◽

Ceria Sitorus

Keyword(s):

Heavy Metal ◽

Diffraction Analysis ◽

Metal Content ◽

Energy Analysis ◽

Nanometer Scale ◽

X Ray Diffraction ◽

X Ray ◽

Atomic Adsorption ◽

Heavy Metal Adsorbent ◽

Scanning Electron

The nanobentonite has been synthesized from natural bentonite taken from Tapanuli Utara, Indonesia using coprecipitation method with various solvents (HCl, H2SO4, and HNO3). Its properties as a metal adsorbent were investigated by Atomic Adsorption Spectrophotometry. X-Ray Diffraction analysis revealed that the bentonite produced is in nanometer scale. The characterization results obtained from the SiO2single phase with highest dhkl was at millier index (101) with 2 of 21.9o, 22.0o, 22.07o respectively. The results of Microscope-Scanning Electron Energy analysis of nanobentonite dispersion indicated a reduction in agglomeration and finer nanobentonite surface. The Surface Area Analyzer results showed the SBET nanobentonite for solvent variation of HCL, H2SO4, and HNO3 respectively were 731.76 m2/g, 868.11 m2/g, 493.97 m2/ g. Lastly, Atomic Adsorption Spectrophotometric test showed that the optimal absorption of the metal content possessed by variety of HCl and nanobentonites with adsorption power of 91.16% for Pb, 76.39% for Cu, and 82.74% Co.

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Characterization and Modification of Natural Zeolite and Its Cracking Properties on Petroleum Fraction

Indonesian Journal of Chemistry ◽

10.22146/ijc.21954 ◽

2010 ◽

Vol 1 (1) ◽

pp. 7-10

Author(s):

Mukhamad Nurhadi ◽

Wega Trisunaryanti ◽

M Utoro Yahya ◽

Bambang Setiaji

Keyword(s):

Ion Exchange ◽

Natural Zeolite ◽

Zeolite Catalyst ◽

Nitrate Solution ◽

Gravimetric Method ◽

Hydrogen Gas ◽

Petroleum Fraction ◽

Ammonia Adsorption ◽

Exchange Method ◽

Atomic Adsorption Spectroscopy

Preparation of natural zeolite catalyst consist of dealumination using acid (HF 1% (v/v), HCI 1M), steaming at calcination temperature and both treatments ware carried out. The modification of the zeolite catalyst was done by loading a small amount of chromium (3% b/b) on the zeolite by ion exchange method. Ion exchange was processed by immersing the zeolite in 0.115 M chromium nitrate solution, followed by oxidation with oxygen gas and reduction by hydrogen gas. The characterization of the zeolite catalyst by mean of Si/AI ratio, acidity, metal contents (Na, K, Ca, Fe and Cr) and surface area including pore size distribution were determined by gravimetric method, ammonia adsorption, Atomic Adsorption Spectroscopy (AAS) and nitrogen gas sorption analyzer (NOVA-1000), respectively. The result of characterization showed that dealumination process increased the Si/AI ratio, acidity and decreased the metal content. The result of cracking process showed that modification of the natural zeolite catalyst enhanced the catalysis property, it showed relatively high cracking activity of petroleum fraction and low kokass formation.

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Single-Crystal Studies of Molecular and Atomic Adsorption on Transition-Metal Oxides

Adsorption on Ordered Surfaces of Ionic Solids and Thin Films - Springer Series in Surface Sciences ◽

10.1007/978-3-642-78632-7_12 ◽

1993 ◽

pp. 125-135 ◽

Cited By ~ 5

Author(s):

V. E. Henrich

Keyword(s):

Transition Metal ◽

Single Crystal ◽

Metal Oxides ◽

Transition Metal Oxides ◽

Atomic Adsorption

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Kesetimbangan Adsorpsi Zat Warna Methyl Violet Oleh Karbon Aktif Berbasis Limbah Daun Nanas (Ananas comosus L)

METANA ◽

10.14710/metana.v14i2.20095 ◽

2018 ◽

Vol 14 (2) ◽

pp. 31

Author(s):

Lanjar Lanjar ◽

Fatma Indah Riayanti ◽

Widi Astuti

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fourier Transform ◽

Surface Area ◽

Methyl Violet ◽

Fourier Transform Infrared ◽

Ananas Comosus ◽

Ftir Spectrometer ◽

Model Isotherm ◽

Scanning Electron

Industri tekstil semakin berkembang seiring dengan pertumbuhan penduduk di Indonesia. Selain memberikan manfaat, industri tekstil memberikan dampak negatif bagi lingkungan akibat penggunaan zat warna sintetis, salah satunya yaitu methyl violet. Apabila limbah tersebut dibuang ke perairan akan menyebabkan rusaknya ekologi lingkungan dan ancaman bagi kesehatan manusia, karena sebagian besar zat warna bersifat sukar terurai (non-bidegradable) dan karsinogenik (Brono, 2010). Salah satu metode yang terbukti efektif untuk menghilangkan zat warna adalah adsorpsi menggunakan karbon aktif. Pada penelitian ini karbon aktif dibuat dari limbah daun nanas dengan aktivator ZnCl2 dan pemanasan gelombang mikro. Selanjutnya, karbon aktif tersebut dikarakteriasi morfologi permukaan menggunakan Scanning Electron Microscopy (SEM), luas permukaan menggunakan Surface Area Analyzer, dan analisis gugus fungsi menggunakan Fourier Transform Infrared (FTIR) spectrometer, dan digunakan untuk menjerap methyl violet di larutan. Hasil penelitian menunjukkan bahwa karbon aktif dari limbah daun nanas yang teraktivasi ZnCl2 menghasilkan pori yang lebih besar dibandingkan dengan karbon tanpa aktivasi serta memiliki gugus fungsi yang dapat menjerap methyl violet. Kondisi optimum untuk adsorpsi adalah pH 5, waktu kontak 90 menit, dan konsentrasi awal 500 mg/L. Model kesetimbangan yang sesuai yaitu menggunakan model isotherm freundlich.

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